Introduce simple notifications support (g_notification_set_body (Service::display_desktop_notification()).
Fix issue with destroying GtkApplicationWindow in MainWindow.
Implicitly declare default Buffer destructor.
Implicitly delcare Connections's constructos, destructor and assign operators as deleted or default.
Implicitly delcare Connection's constructos, destructor and assign operators as deleted or default.
Implement Connection::compare().
Implement Connections::find().
Improve std::hash and std::equal_to specializations for GInetAddress (instead of GInetSocketAddress).
Update utilities.*pp test